Crucial Basics 4GB DDR4 2666MHZ SODIMM Laptop Memory (CB4GS2666)

The Crucial Basics 4GB DDR4 2666MHz SODIMM is a straightforward, no-frills memory module designed for laptop users looking to add or replace RAM on a tight budget. Built around the SODIMM form factor, it is physically compatible with the compact slot found in most consumer and business laptops, as well as select small-form-factor desktops that accept SO-DIMM modules. Running at a standard DDR4 speed of 2666 MHz, this module delivers reliable everyday performance for web browsing, document editing, light multitasking, and media playback. The 1.2V operating voltage is the standard low-voltage specification for DDR4, helping keep power consumption and heat generation in check — a consideration worth noting for battery-powered laptops. The module carries a CL19 (CAS Latency 19) timing. While not a performance-tuned latency figure, CL19 is typical for value-tier DDR4 modules at this speed grade and is broadly compatible with standard JEDEC specifications that most laptops implement. Installation is tool-free on most platforms: simply insert the module at an angle into the SODIMM slot and press it flat until the retaining clips engage. The SKU CB4GS2666 and GTIN 4077566256745 can be used to verify authenticity and cross-reference compatibility lists. As a Crucial Basics product, it sits in the brand's entry-level tier, prioritising compatibility and value over overclocking headroom or extreme latency tuning. Verified Specifications: - Capacity: 4 GB - Memory Type: DDR4 - Form Factor: SODIMM (laptop) - Speed Grade: 2666 MHz - Operating Voltage: 1.2V - CAS Latency: CL19 - GTIN / EAN: 4077566256745 - SKU: CB4GS2666 - Brand: Crucial Before purchasing, confirm your laptop's maximum supported RAM capacity and speed grade in your system manual or on Crucial's online compatibility tool, as not all laptops support upgrades beyond their factory configuration